InChI=1/C13H15FN2O3S/c1-8(2)13(17)16-15-11-5-6-20(18,19)12-4-3-9(14)7-10(11)12/h3-4,7-8H,5-6H2,1-2H3,(H,16,17)/b15-11+/f/h16H 9FD348B8E8498FB1